\begin{table}%t1
   \caption{Physical parameters derived from the observed H$_{2}$ line emission. }\label{T:PARAMS}        \small%\centerline
{
    \begin{tabular}{cccccccccc}
        \hline \hline
          Parameter & \multicolumn{3}{c}{Knot~A} 
                    & \multicolumn{3}{c}{Knot~B} 
                    & \multicolumn{3}{c}{Knot~C} \\
        \cline{2-10}
                    & 1--0~$S$(3) & 1--0~$S$(1) & 2--1~$S$(1) 
                    & 1--0~$S$(3) & 1--0~$S$(1) & 2--1~$S$(1) 
                    & 1--0~$S$(3) & 1--0~$S$(1) & 2--1~$S$(1) \\
        \hline
          $d$~[arcsec]~$^{[a]}$ & \multicolumn{3}{c}{0.72} 
                                  & \multicolumn{3}{c}{1.17} 
                                  & \multicolumn{3}{c}{1.50} \\
       % \hline
          $I$(H$_{2}$)~[$\frac{\rm W}{\rm m^{2}~arcsec^{2}}$] & 1.4~$\times$~10$^{-18}$ & 1.4~$\times$~10$^{-18}$ & $<$8.4~$\times$~10$^{-19}$ 
                                                              & 1.7~$\times$~10$^{-18}$ & 1.2~$\times$~10$^{-18}$ & $<$8.4~$\times$~10$^{-19}$ 
                                                              & 2.0~$\times$~10$^{-18}$ & 9.3~$\times$~10$^{-19}$ & $<$8.4~$\times$~10$^{-19}$ \\[0.1cm]
     %   \hline
          $S/N$~[$\sigma$] & $\sim$3 & $\sim$5 & $<$3 
                          & $\sim$3 & $\sim$4 & $<$3 
                          & $\sim$4 & $\sim$3 & $<$3 \\
     %   \hline
          $A_{K}$~[mag]~$^{[b]}$ & \multicolumn{3}{c}{14.6} 
                                           & \multicolumn{3}{c}{ 6.7} 
                                           & \multicolumn{3}{c}{ 0.4} \\
     %   \hline
          $F$(H$_{2}$)~[$\frac{\rm W}{\rm m^{2}}$]~$^{[b],[c]}$ & 5.8~$\times$~10$^{-11}$ & 5.9~$\times$~10$^{-11}$ & $<$3.5~$\times$~10$^{-11}$ 
                                                                    & 5.1~$\times$~10$^{-14}$ & 3.4~$\times$~10$^{-14}$ & $<$2.5~$\times$~10$^{-14}$ 
                                                                    & 1.9~$\times$~10$^{-16}$ & 8.8~$\times$~10$^{-17}$ & $<$7.9~$\times$~10$^{-17}$ \\
     %   \hline
          $\cal L$(H$_{2}$)~[$\cal L\sol$]~$^{[b],[c]}$ & 8.8                     & 8.9                     &      5.3                     
                                                              & 7.7~$\times$~10$^{-3}$ & 5.2~$\times$~10$^{-3}$ &      3.8~$\times$~10$^{-3}$ 
                                                              & 2.8~$\times$~10$^{-5}$ & 1.3~$\times$~10$^{-5}$ & $<$~1.2~$\times$~10$^{-5}$ \\
        \hline
      \end{tabular}}
      \medskip
          Notes: $^a$ Measured from the disk center; 
                 $^b$ highly uncertain, as based on upper limits for the H$_{2}$ $v=2$--1~S(1) 
                     line fluxes (see detailed discussion in the text); 
                 $^c$ extinction corrected. 
  %\vspace{-2mm}
  \end{table}